I assume that this is related to if not the same as http://tracker.moodle.org/browse/CONTRIB-2795?
In which case, with respect it is not actually a Collapsed Topics Format, Topics Format or indeed Moodle issue but an Internet Explorer 8 and user usage issue.
As for the page 'screwing up', I have done my best to make it work in Internet Explorer, would it be possible to message me a backup of the course so I can have a chance of rectifying the issue? For every hour I spend working on the format, I spend another two trying to make it work with Internet Explorer!!
Please could you be so kind as to provide more information / examples in future so that I can help you in a faster and more effective way to resolve the issue .